Solve by completing the square to obtain exact solutions.9x2 + 18x + 8 = 0
A. - 
, - 
B. - 
, 
C. 
, 
D. - 
, - 
Answer: D
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Solve the problem.A ball is tossed upward. Its height after t seconds is given in the table. 
Find a quadratic function to model the data. Use the model to determine when the ball reaches its maximum height, as well as the value of the maximum height.
A. The ball reaches a maximum height of 40 feet in 1.5 seconds. B. The ball reaches a maximum height of 50 feet in 2.1 seconds. C. The ball reaches a maximum height of 44.6 feet in 1.6 seconds. D. The ball never reaches a maximum height.
Simplify the expression by using a sum or difference identity.sin (83°) cos(17°) + sin(-7°) sin(-17°)
A. 0 B. 1 C. sin 100° D. cos 100°
Add: 9787 + 9522 + 8545
A) 27,854 B) 27,864 C) 26,754 D) 26,844 E) 28,854
Find the exact function value.sin-1
A. 
B. - 
C. - 
D. - 